SoundcloudInstallAsker.java

package net.rdrei.android.scdl2.ui;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;

import com.google.inject.Inject;

import net.rdrei.android.scdl2.Config;
import net.rdrei.android.scdl2.R;
import net.rdrei.android.scdl2.ui.TrackErrorActivity.ErrorCode;

/**
 * Used by SoundcloudLauncher to ask whether the user wants to install it.
 */
public class SoundcloudInstallAsker {

    private final Context mContext;
    private static final String SOUNDCLOUD_PLAY_URI = "market://details?id=com.soundcloud.android";
    private static final String SOUNDCLOUD_AMAZON_URI = "http://www.amazon.com/gp/mas/dl/android?p=com.soundcloud.android";

    @Inject
    public SoundcloudInstallAsker(final Context context) {
        mContext = context;
    }

    /**
     * Opens a dialog in the given context asking the user to download
     * SoundCloud from their play store or equivalent.
     */
    public void ask() {
        final Builder builder = new AlertDialog.Builder(mContext);
        final int dialogMessage = getDialogMessage();
        builder.setMessage(dialogMessage)
                .setCancelable(true)
                .setPositiveButton(R.string.dialog_yes,
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(final DialogInterface dialog,
                                                final int which) {

                                startSoundcloudMarketActivity();
                            }
                        })
                .setNegativeButton(R.string.dialog_no,
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(final DialogInterface dialog,
                                                final int which) {
                                dialog.cancel();
                            }
                        }).show();
    }

    private int getDialogMessage() {
        switch (Config.STORE) {
            case AMAZON:
                return R.string.dialog_install_soundcloud_amazon;
            case GOOGLE_PLAY:
                return R.string.dialog_install_soundcloud_play;
            default:
                throw new IllegalStateException("Invalid STORE specified.");
        }
    }

    private Intent getMarketIntent() {
        String uri;

        switch (Config.STORE) {
            case AMAZON:
                uri = SOUNDCLOUD_AMAZON_URI;
                break;
            case GOOGLE_PLAY:
                uri = SOUNDCLOUD_PLAY_URI;
                break;
            default:
                throw new IllegalStateException("Invalid STORE specified.");
        }

        return new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
    }

    /**
     * Start the market intent to install Soundcloud.
     */
    public void startSoundcloudMarketActivity() {
        final Intent intent = getMarketIntent();
        try {
            mContext.startActivity(intent);
        } catch (final ActivityNotFoundException e) {
            final Intent errorIntent = new Intent(mContext,
                    TrackErrorActivity.class);
            errorIntent.putExtra(TrackErrorActivity.EXTRA_ERROR_CODE,
                    ErrorCode.NO_MARKET);

            mContext.startActivity(errorIntent);
        }
    }
}